9919692144 has 120 divisors (see below), whose sum is σ = 28425872592. Its totient is φ = 3228226560.

The previous prime is 9919692143. The next prime is 9919692229. The reversal of 9919692144 is 4412969199.

9919692144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9919692143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1199287 + ... + 1207529.

Almost surely, 2^9919692144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9919692144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14212936296).

9919692144 is an abundant number, since it is smaller than the sum of its proper divisors (18506180448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9919692144 is a wasteful number, since it uses less digits than its factorization.

9919692144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8455 (or 8446 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 9919692144 is about 99597.6512976084. The cubic root of 9919692144 is about 2148.6519145226.

The spelling of 9919692144 in words is "nine billion, nine hundred nineteen million, six hundred ninety-two thousand, one hundred forty-four".